Former "American Idol" judge and Grammy winner Kara DioGuardi made her Broadway debut in the Tony-winning revival of Chicago as Roxie Hart on Sept. 6 at the Ambassador Theatre.

DioGuardi steps into the role of merry murderess Roxie Hart for an eight-week limited engagement through Oct. 30. She joins a cast that currently includes Amra-Faye Wright as Velma Kelly, Tony Yazbeck as Billy Flynn, Chris Sullivan as Amos Hart and Carol Woods as Matron "Mama" Morton.

Here's a look at DioGuardi's debut:

Kara DioGuardi Makes Broadway Debut in Chicago

Kara DioGuardi Makes Broadway Debut in Chicago

Former "American Idol" judge and Grammy winner Kara DioGuardi made her Broadway debut in the Tony-winning revival of Chicago as Roxie Hart on Sept. 6 at the Ambassador Theatre. Read the Playbill.com story.